Heating-furnace



(No Model.) 2 Sheets- Sheet 1. L. ANDERSON.

HEATING FURNACE.

Patented Nov. 11, 1890.

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(No Model.) 2 Sheets-Sheet 2.

L. ANDERSON.

HEATING FURNACE. No 440,237. Patented Nov. 11. 1890.

J J A 2 4, ZZM M ment of said parts.

UNITED STATES ATENT Enron.

LOUIS ANDERSON, OF CHICAGO, ILLINOIS.

HEATING-FURNACE.

SPECIFICATION forming part of Letters Patent No. 440,237, dated November11, 1890.

Application filed May 21, 1890. Serial No. 352,646. (No model.)

To all whom it may concern.-

Be it known that I, LOUIS ANDERSON, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Steam-Heating Furnaces,of which the following is such a full, clear, and exact description aswill enable those skilled in the art to which it appertains to make anduse the same, reference being had to the accompanying drawings, and tothe letters of reference marked thereon, which form a part of thisspecification.

This invention relates to improvements in that class of generators usedin supplying steam to a circulating system for heating purposes.

The object of the invention is to provide a means for constructing asteam-generator so that the generating-chamber, the superheat'ing-chamber, and all parts subjected to great strain and requiringconsiderable strength may be made separately and of such material as issuitable for the purpose, while the combustion-chamber or furnaceproper, not having to withstand the pressure of the steam, may be madeof cheaper material, and the whole so combined as to give easy access tothe different parts for repairs and replace- By this means it is obviousthat the cost of the device as a whole will be much lessened withoutimpairing its strength and durability, and at the same time present aneat and attractive appearance.

The invention has also for its object the novel construction,arrangement, and combination of parts, as will be hereinafter fully setforth, pointed out in the appended claims, and illustrated in theaccompanying drawings.

In the accompanying drawings, in which similar letters of referencedesignate corresponding parts, Figure 1 is a front elevation of afurnace embodying the invention. Fig. 2 is a side elevation of the same,the muddrums being removed. Fig. 3 is a transverse vertical sectionthrough the generating-chamber. Fig. 4 is a horizontal section on theline a: a: of Fig. 3. Fig. 5 is a horizontal section through the furnacebelow the water-tubes. Fig. 6 is a plan view. Fig. 7 is a transversevertical section of the entire generator. Fig. 8 is a longitudinalsection through that part inclosing the Water-tubes. Fig. 9 is a frontelevation showing certain parts not shown in Fig. 1.

Referring to the drawings by letter, A designates the steamgeneratingchamber, B the combustion-chamber, and O the ash-pit. The shell of thegenerating-chamber has a rectangular shape, and consists of the sides AA and the flue-sheets A A. Between the fluesheets are mounted thewater-tubes D, having their ends secured in said sheets in any suitablemanner. The circulating-chambers E E are secured to the outside of thefluesheets and have the water-tubes projecting into them for a shortdistance. The pipe 8' extends into the circulating-chamber E nearly tothe'top of the same and connects at its lower end with the mud-drum F,and serves to carry off any foreign matter which may be floating on thesurface of the water. The lower part of the chamber E is connected witha pipe 6, leading to a similar mud-drum, and serves to carry off anyheavy sediment which might settle to the bottom of .thegenerating-chamber. Pipes f, having suitable stop-cocks f are provided,so that said drums may be blown off or cleaned. A pipe h, leading fromthe circulating-chamber E. connects with a steam-gage H to indicate thepressure of the steam.

To the top of the shell of the generatingchamber is secured thesuperheating-chamber G, which forms the top for the same, and haspassing through it the chimney II. This superheating-chamber isconnected with the circulating-ehamber E by means of the pipes g g. Thepipeg also leads to the circulating system with which it is to be used.

The combustionchamber B, the upper part of which is the steam-generatingchamber, is provided with a coal-magazine B, which is provided with adoor I). This magazine may be made integral with the furnace or it maybe made detachable, and is of such a size and so arranged as to give asteady supply of fuel to the fire for a comparatively long length oftime. On the other side of the furnace a door 5 is provided, throughwhich fuel can be also supplied, but only enough to fill the fire-box.

To the water-tubes m m are hung the deflectors M M, which extend thewhole width of the combustion-chamber and have attached to their lowerends the deflector M. These three deflectors M M M may be made integral,as shown in Fig. 7, or they may be made of separate sheets of metal, thelower one. M resting upon the upturned edges of the others, as shown inFig. 3. In the chamber formed by the deflectors M M M are deflectors N.These latter deflectors are attached to the under side of the top of thegenerating-chamher and extend downward nearly to the deflector M,forming a flue between them somewhat wider than the width of the chimneyto which it leads.

Fire is started in the fire-box and the heat and other products ofcombustion will pass upward through the flues between the sides of thegenerating-chamber and the deflectors M M, thence downward between thedeflectors M and N, striking against the deflector l and then upwardbetween the deflectors N N to the chimney. By this system of flues muchmore of the heat is utilized than if it passed directly to the chimney.By this means the water in the tubes is heated and some of it isconverted into steam, and which passes upward through the pipes g g tothe superheating-chamber or to the circulating system.

The shell of the generating-chamber may be cast in one piece or built upof sheets, as also may the superheatiug-chamber, which forms the top ofthe said chamber, which is attached in any suitable manner to thecombustion chamber. The sides of the latter may be made of materialinferior to that used in the construction of the generating-cham ber,having no pressure of steam to withstand,

and consequently the cost will be greatly re duced.

Having thus described my invention,what I claim, and desire to secure byLetters Patcut, is

1. In a steam-generator, the combination of the generatingchamber, thewater-tubes mounted therein, the circulating-chambers secured to theflue-sheets of the said generating-chamber, the superheating-chambersecured to the said generating-chamber and forming the top of the same,connected with one of the circulating-chambers and surrounding the flueleading to the chimney, and the deflectors supported within thegenerating-chamberby the Water-tubes, substantially as and for thepurpose specified.

2. In a steam-generator, the combination of the circulatiug-chambers,themud-d rums, and the pipes connecting said chambers with said drums, oneof said pipes projecting into its respective chamber nearly to its topand the other of said pipes connecting with the bottom of its respectivechamber, substantially as shown and specified.

3. In a steam-generator, the generatingchamber, the water-tubes mountedtherein, the deflectors M M, vertically supported by said tubes, thedeflector M, supported by said deflectors M M, and the deflectorssupported between said deflectors M M, substantially as and for thepurpose specified.

In testimony that I claim the above I have hereunto set my hand, this9th day of May, 1890, in the presence of two witnesses.

LOUIS ANDERSON. WVitnesses:

GUsT OLsoN,

MILES F. GHANY.

